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Finding the Fourth Proportional to 220,234.66, 303,945.16 and 123,454.95

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Solution

The fourth proportional to 220,234.66, 303,945.16 and 123,454.95 is: 170,379.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,234.66 : 303,945.16 = 123,454.95 : x
  2. Step 2: Convert to fraction form
    220,234.66/303,945.16 = 123,454.95/x
  3. Step 3: Cross multiply
    220,234.66x = 303,945.16 × 123,454.95
  4. Step 4: Simplify right side
    220,234.66x = 37,523,535,664.41
  5. Step 5: Solve for x
    x = 37,523,535,664.41/220,234.66
  6. Step 6: Final answer
    x = 170,379.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.